Problem: What are the most important words?
the moon is seen as it starts passing in front of the sun during a solar eclipse .
Answer: eclipse, front, moon, sun


Problem: What are the most important words?
interstellar travel to a distant star deep in space
Answer: space, star, travel


Problem: What are the most important words?
flock of sheep grazing in late evening light in winter in a mountain pasture overlooking wooded countryside
Answer:
light, pasture, sheep